- Definitions|2
- Thesaurus|938
- Abbreviations|0
possible profanity
| iniquitous(adjective, evil, violent, wild, fierce) | |
| malicious(adjective, animal, mean, evil, harsh) | |
| mephistophelean | |
| serpentine(adjective, evil, vile, wicked, crazed) | |
| unholy | |
| animal(adjective, mean, cruel, vicious, brutal) | |
| brutish(adjective, evil, violent, wild, vicious) | |
| cat-hearted(adjective, bad behavior, aroused negative) | |
| cold(adjective, bad behavior, aroused negative) | |
| cold-hearted(adjective, bad behavior, aroused negative) | |
| damnable(adjective, terrible, wicked, horrible, malevolent) | |
| dark | |
| emotionless(adjective, bad behavior, aroused negative) | |
| evil-minded(adjective, bad behavior, aroused negative) | |
| fell(adjective, animal, mean, harsh, violent) | |
| fiendlike | |
| fierce(adjective, animal, mean, harsh, violent) | |
| flagitious | |
| flagituous(adjective, bad behavior, aroused negative) | |
| frightful |
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Diabolical on
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| APA | Smart Define. (2016). diabolical thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/diabolical/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "diabolical thesaurus" https://smartdefine.org/diabolical/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, diabolical thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/diabolical/thesaurus/synonyms>. |
| MLA | Smart Define. "diabolical thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/diabolical/thesaurus/synonyms> |